+++ /dev/null
-package org.bouncycastle.crypto;
-
-import java.lang.IllegalStateException;
-
-/**
- * Block cipher engines are expected to conform to this interface.
- */
-public interface BlockCipher
-{
- /**
- * Initialise the cipher.
- *
- * @param forEncryption if true the cipher is initialised for
- * encryption, if false for decryption.
- * @param param the key and other data required by the cipher.
- * @exception IllegalArgumentException if the params argument is
- * inappropriate.
- */
- public void init(boolean forEncryption, CipherParameters params)
- throws IllegalArgumentException;
-
- /**
- * Return the name of the algorithm the cipher implements.
- *
- * @return the name of the algorithm the cipher implements.
- */
- public String getAlgorithmName();
-
- /**
- * Return the block size for this cipher (in bytes).
- *
- * @return the block size for this cipher in bytes.
- */
- public int getBlockSize();
-
- /**
- * Process one block of input from the array in and write it to
- * the out array.
- *
- * @param in the array containing the input data.
- * @param inOff offset into the in array the data starts at.
- * @param out the array the output data will be copied into.
- * @param outOff the offset into the out array the output will start at.
- * @exception DataLengthException if there isn't enough data in in, or
- * space in out.
- * @exception IllegalStateException if the cipher isn't initialised.
- * @return the number of bytes processed and produced.
- */
- public int processBlock(byte[] in, int inOff, byte[] out, int outOff)
- throws DataLengthException, IllegalStateException;
-
- /**
- * Reset the cipher. After resetting the cipher is in the same state
- * as it was after the last init (if there was one).
- */
- public void reset();
-}